A sterile, flat surgical cutting instrument, usually made of high-grade stainless steel, with a serrated edge and designed for attachment to a dedicated powered saw used for cutting bone/tissue during orthopaedic or oral surgery. This device is designed with cutting teeth arranged in an arc or on a flat plane at its distal end; the teeth are at a 90? angle to its shaft. It cuts when it is moved in a rapid oscillating motion. This device enables side-cutting action to be performed within a restricted-access area. This is a single-use device.